Search results for "Insula"
showing 10 items of 735 documents
Reducing electric and thermal energy needs in buildings by using innovative envelope materials - Laboratory results of bio-composites embodying tomat…
2018
The life style of building occupants is continuously arising towards conditions that are more comfortable involving, on turn, the growing of the electric energy consumptions for climatization purposes. This calls for the improvement of the efficiencies of equipment along with environmental performance of building materials. Laboratory analyses of samples of mixed materials, utilizing tomato stems harvested in Sicily and Cataluña, have been conducted Thermal conductance and mechanical properties have been detected for different rates of bio-component and inert materials. First results of the thermal properties seem to situate such bio-composites among the insulating building materials, for a…
Desalination. From a questioned resource to a necessary and strategic resource during drought situations for the water supply in the Segura River Bas…
2018
En España, la desalinización ha cobrado un gran impulso en las dos últimas décadas gracias a la aprobación en 2001 del Plan Hidrológico Nacional y en 2004 del Programa A.G.U.A. Ello ha sido motivado por dos factores principales: 1) Las recurrentes e intensas sequías en las últimas décadas, en especial, la de los años noventa en la que se puso de manifiesto la necesidad de la búsqueda de nuevas fuentes y la apuesta por los recursos hídricos no convencionales (desalinización y aguas regeneradas depuradas); y 2) Cambio del antiguo paradigma hidráulico basado en el incremento de la oferta mediante las transferencias de aguas. El objetivo de esta investigación es analizar el rol que ha desempeña…
Revisión taxonómica de Helix zapateri Hidalgo, 1870 (Pulmonata: Trissexodontidae) y su nuevo estatus en la malacofauna ibérica
2008
Alberto Martínez Ortí: alberto.martinez@uv.es Revisión taxonómica de Helix zapateri Hidalgo, 1870 (Pulmonata, Trissexodontidae) y su nuevo estatus en la malacofauna ibérica.— Se realiza la revisión taxonómica y se discute la nueva asignación genérica del taxon ibérico Helix zapateri, mediante la comparación de caracteres conquiológicos con las especies más similares, Hatumia pseudogasulli y Gasullia gasulli, ambas trissexodóntidos. Los estudios conquiológicos nos permiten concluir que Helix zapateri debe ser considerada como una especie válida y designarse como Hatumia zapateri, y que Hatumia pseudogasulli corresponde a un sinónimo posterior de H. zapateri. Taxonomical revision of Helix zap…
Sciuridae (Rodentia, Mammalia) from the Late Miocene of Venta del Moro (Cabriel Basin, Spain): biostratigraphical, phylogenetic and palaeoecological …
2016
Fossil squirrels are relatively abundant in Aragonian and Ramblian assemblages, but very scarce in the Late Turolian and Ruscinian of the Iberian Peninsula. Until now, the locality of Venta del Mor...
Towards Si-based photonic circuits: Integrating photonic crystals in silicon-on-insulator platforms
2007
In the context of Si-based photonics, we report on a strategy to integrate two optical components, a 3D photonic crystal light emitter and a waveguide, in a silicon-on-insulator patterned substrate. Self-assembled colloidal photonic crystals are produced with high crystalline quality and spatial selectivity. Plane wave expansion and finite-difference time-domain have been used to find suitable configurations for positioning emitters and waveguides. The first steps toward the realisation of these configurations are presented.
Topological magneto-optical effects and their quantization in noncoplanar antiferromagnets
2018
Reflecting the fundamental interactions of polarized light with magnetic matter, magneto-optical effects are well known since more than a century. The emergence of these phenomena is commonly attributed to the interplay between exchange splitting and spin-orbit coupling in the electronic structure of magnets. Using theoretical arguments, we demonstrate that topological magneto-optical effects can arise in noncoplanar antiferromagnets due to the finite scalar spin chirality, without any reference to exchange splitting or spin-orbit coupling. We propose spectral integrals of certain magneto-optical quantities that uncover the unique topological nature of the discovered effect. We also find th…
Novedades taxonómicas y nomenclaturales para la flora valenciana, II
2010
Continuando con la actualización taxonómica y nomenclatural de la flora valenciana, se proponen diez combinaciones nuevas y un nombre nuevo para táxones y nototáxones que crecen en el Mediterráneo occidental. Además, se designa un epitipo para Sideritis × angustifolia Lag., híbrido sobre cuya identidad ha existido gran controversia, y un lectotipo para Globularia linifolia Lam. Del mismo modo, se discute la citación correcta del lugar y fecha de publicación de cuatro táxones más. Taxonomic and nomenclatural novelties concerning the Valencian flora (eastern Spain), II: As a part of the taxonomical and nomenclatural update of vascular flora of the Valencian Community, ten new combinations and…
Spinothalamic and thalamocortical nociceptive pathways
2002
The concept that the perception of a stimulus as being painful requires activity in parts of the cerebral cortex has gained universal recognition within the past 10 years. 28 The large number of functional imaging studies in humans, appearing during that period, have greatly contributed to this development by showing consistent evidence for activation of various cortical areas by painful stimuli, including the primary and secondary somatosensory cortex, the insula, the anterior cingulate gyrus, and prefrontal cortical areas. Thus, the sense of pain—like all other senses— has a representation within the cerebral cortex. These imaging studies, however, did not reveal the pathways by which a p…
Le isole Pelagie: un luogo straordinario anche per la fauna.
2015
Lampedusa e Linosa sono isole molto diverse fra loro, una calcarea, l’altra vulcanica; quindi è comprensibile che la fauna sia in buona parte differente. Tuttavia la maggioranza delle specie vi sono migrate attivamente o, nel caso di Lampedusa, rappresentano la testimonianza di un antico collegamento con la Tunisia. L’importanza faunistica delle Pelagie è dovuta ai taxa endemici ma anche alla presenza di specie africane al limite geografico della loro distribuzione (Lampedusa, di natura calcarea, si trova infatti sulla piattaforma continentale africana).
Enhancer, chromatin insulator, non-coding RNA and α-histone gene expression during embryogenesis of the sea urchin Paracentrotus lividus.
2009
Core promoters and chromatin insulators (ins) may direct a transcriptional enhancer (enh) to prefer a specific promoter in complex genetic loci. Enh and ins flank the sea urchin Paracentrotus lividus α-histone H2A transcription unit in a tandem repeated cluster containing the five histone genes. In vivo competition assays of enh and ins functions reveal that the H2A enh-bound MBF-1 activator participates also in the expression of the H3 gene and that the sns5 ins buffers the downstream H1 promoter from the H2A enh. These results suggest that both the H2A enh and the sns5 ins may account for the diverse accumulation of the linker vs core nucleosomal histones during early development of the s…